High intensity sound stimulation and synaptic plasticity

• Grant number: 16/01607-4
• Support Opportunities: Regular Research Grants
• Duration: June 01, 2016 - May 31, 2019
• Field of knowledge: Biological Sciences - Physiology - Physiology of Organs and Systems
• Principal Investigator: Ricardo Mauricio Xavier Leão
• Grantee: Ricardo Mauricio Xavier Leão
• Host Institution: Faculdade de Medicina de Ribeirão Preto (FMRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

The limbic system is affected by sensory stimuli, including stimulation from the auditory system. Not only, neurons and synapses from regions like the hippocampus and the amygdala can be affected by auditory stimulation and some pathologies of the auditory system caused by acoustic trauma, as for example tinnitus, have a strong limbic component. Recently we demonstrated that chronic high-intensity auditory stimulation inhibits long-term potentiation in the Schaffer-CA1 hippocampal pathway in rats, without affecting spatial learning and memory (Cunha et al., 2105). In this project we propose to investigate the mechanisms underlying this effect and the effect of the acute auditory stimulation, the effect on auditory synapses and the implementation of optogenetics tools which will help in the investigation of this and other related phenomena. Because of the increasing exposition to loud sounds in the modern urban life, both caused by environmental, occupational and recreational causes, and to the impact in the auditory and emotional health that the acoustic stress can promote, to understand the mechanisms that link the auditory and limbic system are important for the comprehension of the physiological substrates of the pathologies caused by acoustic stress. (AU)

Scientific publications

(12)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE DEUS, J. L.; CUNHA, A. O. S.; TERZIAN, A. L.; RESSTEL, L. B.; ELIAS, L. L. K.; ANTUNES-RODRIGUES, J.; ALMEIDA, S. S.; LEAO, R. M.. A single episode of high intensity sound inhibits long-term potentiation in the hippocampus of rats. SCIENTIFIC REPORTS, v. 7, OCT 26 2017. (16/01607-4)

CEBALLOS, CESAR C.; PENA, RODRIGO F. O.; ROQUE, ANTONIO C.; LEAO, RICARDO M.. Non-Decaying postsynaptics potentials and delayed spikes in hippocampal pyramidal neurons generated by a zero slope conductance created by the persistent Na+ current. CHANNELS, v. 12, n. 1, p. 81-88, 2018. (13/07699-0, 13/25667-8, 16/01607-4)

SIQUEIRA CUNHA, ALEXANDRA OLIMPIO; CEBALLOS, CESAR CELIS; DE DEUS, JUNIA LARA; DE OLIVEIRA PENA, RODRIGO FELIPE; CORTES DE OLIVEIRA, JOSE ANTONIO; ROQUE, ANTONIO CARLOS; GARCIA-CAIRASCO, NORBERTO; LEAO, RICARDO MAURICIO. Intrinsic and synaptic properties of hippocampal CA1 pyramidal neurons of the Wistar Audiogenic Rat (WAR) strain, a genetic model of epilepsy. SCIENTIFIC REPORTS, v. 8, JUL 10 2018. (15/50122-0, 16/01607-4, 15/22327-7, 13/07699-0)

STRAZZA, JR., PAULO S.; DE SIQUEIRA, DANIELA V. F.; LEAO, RICARDO M.. ATP-sensitive K+ channels control the spontaneous firing of a glycinergic interneuron in the auditory brainstem. JOURNAL OF PHYSIOLOGY-LONDON, v. 599, n. 5, JAN 2021. (19/13458-1, 16/01607-4)

DE DEUS, JUNIA LARA; AMORIM, MATEUS RAMOS; GAMA DE BARCELLOS FILHO, PROCOPIO CLEBER; CORTES DE OLIVEIRA, JOSE ANTONIO; BATALHAO, MARCELO EDUARDO; GARCIA-CAIRASCO, NORBERTO; CARNIO, EVELIN CAPELLARI; LEAO, RICARDO MAURICIO; DE SIQUEIRA BRANCO, LUIZ GUILHERME; SIQUEIRA CUNHA, ALEXANDRA OLIMPIO. Inflammatory markers in the hippocampus after audiogenic kindling. Neuroscience Letters, v. 721, MAR 16 2020. (17/09878-0, 15/22327-7, 16/01607-4, 16/17681-9)

SIQUEIRA CUNHA, ALEXANDRA OLIMPIO; MORADI, MARZIEH; DE DEUS, JUNIA LARA; CEBALLOS, CESAR CELIS; MOREIRA BENITES, NIKOLLAS; GAMA DE BARCELLOS FILHO, PROCOPIO CLEBER; CORTES DE OLIVEIRA, JOSE ANTONIO; GARCIA-CAIRASCO, NORBERTO; LEAO, RICARDO. Alterations in brainstem auditory processing, the acoustic startle response and sensorimotor gating of startle in Wistar audiogenic rats (WAR), an animal model of reflex epilepsies. Brain Research, v. 1727, JAN 15 2020. (15/22327-7, 16/01607-4)

DE DEUS, JUNIA L.; AMORIM, MATEUS R.; RIBEIRO, ALINE B.; BARCELLOS-FILHO, PROCOPIO C. G.; CEBALLOS, CESAR C.; BRANCO, LUIZ GUILHERME S.; CUNHA, ALEXANDRA O. S.; LEAO, RICARDO M.. Loss of Brain-Derived Neurotrophic Factor Mediates Inhibition of Hippocampal Long-Term Potentiation by High-Intensity Sound. Cellular and Molecular Neurobiology, v. 41, n. 4, MAY 2020. (16/17681-9, 15/22327-7, 16/01607-4)

PENA, RODRIGO F. O.; CEBALLOS, CESAR CELIS; DE DEUS, JUNIA LARA; ROQUE, ANTONIO CARLOS; GARCIA-CAIRASCO, NORBERTO; LEAO, RICARDO MAURICIO; SIQUEIRA CUNHA, ALEXANDRA OLIMPIO. Modeling Hippocampal CA1 Gabaergic Synapses of Audiogenic Rats. International Journal of Neural Systems, v. 30, n. 5, MAY 2020. (15/22327-7, 13/07699-0, 15/50122-0, 16/01607-4, 13/25667-8)

CUNHA, ALEXANDRA O. S.; DE DEUS, JUNIA L.; CEBALLOS, CESAR C.; LEAO, RICARDO M.. Increased hippocampal GABAergic inhibition after long-term high-intensity sound exposure. PLoS One, v. 14, n. 5, MAY 8 2019. (15/22327-7, 16/01607-4)

MURAT, CAHUE DE BERNARDIS; LEAO, RICARDO MAURICIO. A voltage-dependent depolarization induced by low external glucose in neurons of the nucleus of the tractus solitarius: interaction with K-ATP channels. JOURNAL OF PHYSIOLOGY-LONDON, v. 597, n. 9, p. 2515-2532, MAY 1 2019. (16/01607-4)

SIQUEIRA CUNHA, ALEXANDRA OLIMPIO; CEBALLOS, CESAR CELIS; DE DEUS, JUNIA LARA; LEAO, RICARDO MAURICIO. Long-term high-intensity sound stimulation inhibits h current (I-h) in CA1 pyramidal neurons. European Journal of Neuroscience, v. 47, n. 11, p. 1401-1413, JUN 2018. (16/01607-4, 15/22327-7)

CEBALLOS, CESAR C.; ROQUE, ANTONIO C.; LEAO, RICARDO M.. A Negative Slope Conductance of the Persistent Sodium Current Prolongs Subthreshold Depolarizations. BIOPHYSICAL JOURNAL, v. 113, n. 10, p. 2207-2217, NOV 21 2017. (16/01607-4, 13/07699-0)